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When a certain coin is flipped, the probability of heads is 0.5. If the coin is flipped 6 times, what is the probability that there are exactly 3 heads?
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A.$$\frac{1}{4}$$
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B.$$\frac{1}{3}$$
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C.$$\frac{5}{16}$$
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D.$$\frac{31}{64}$$
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E.$$\frac{1}{2}$$
C显示答案
